Datasheet AD604 (Analog Devices) - 9

AD604 1000 10 VGN = 2.9V 100 ) ) Hz Hz V/ V/ 10 1 E (n E (n IS IS O O N N 1 RSOURCE ALONE
5 01 18 0 0- 0- 54 54
0.1
00
0.1
00
0.1 0.5 0.9 1.3 1.7 2.1 2.5 2.9 1 10 100 1k VGN (V) RSOURCE (Ω)
Figure 15. Input Referred Noise vs. VGN Figure 18. Input Referred Noise vs. RSOURCE
900 16 VGN = 2.9V VGN = 2.9V 15 14 850 13 12 800 ) B) 11 d Hz ( 10 / E V p UR 9 750 ( IG E F 8 IS E 7 NO IS 700 NO 6 5 4 650 3
16 19 0 0 0-
2
0- 54 54
600
00
1
00
–40 –20 0 20 40 60 80 90 1 10 100 1k 10k TEMPERATURE (°C) RSOURCE (Ω)
Figure 16. Input Referred Noise vs. Temperature Figure 19. Noise Figure vs. RSOURCE
770 40 VGN = 2.9V RS = 240Ω 35 765 30 ) 760 B) d Hz ( 25 / E V p UR 755 IG 20 ISE ( F O E N IS 15 750 NO 10 745
7
5
0 01 02 0- 0- 54 54
740
00
0
00
100k 1M 10M 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 FREQUENCY (Hz) VGN (V)
Figure 17. Input Referred Noise vs. Frequency Figure 20. Noise Figure vs. VGN Rev. G | Page 9 of 32 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PREAMPLIFIER DIFFERENTIAL LADDER (ATTENUATOR) AC COUPLING GAIN CONTROL INTERFACE ACTIVE FEEDBACK AMPLIFIER (FIXED-GAIN AMP) APPLICATIONS INFORMATION ULTRALOW NOISE AGC AMPLIFIER WITH 82 dB TO 96 dB GAIN RANGE ULTRALOW NOISE, DIFFERENTIAL INPUT-DIFFERENTIAL OUTPUT VGA MEDICAL ULTRASOUND TGC DRIVING THE AD9050, A 10-BIT, 40 MSPS ADC EVALUATION BOARD CONNECTING A WAVEFORM TO THE AD604-EVALZ DSX INPUT CONNECTIONS Cascade VGAs to Boost Gain PREAMPLIFIER GAIN OUTPUTS DC OPERATING CONDITIONS EVALUATION BOARD ARTWORK AND SCHEMATIC OUTLINE DIMENSIONS ORDERING GUIDE